运行 Python 来自 Raspberry 终端的脚本失败但 运行 在 IDE 中正常
Running Python Script from Terminal on Raspberry fails but running in IDE is fine
我在我的 Raspberry Pi 上写了一个 Python 脚本，当 运行 在 Thonny IDE 上运行时它工作得很好。但是当我想从终端启动它时，它有很多导入错误。我已经在脚本的开头添加了环境注释。这是我的以下代码：
#!/usr/bin/env python
import cv2
import time
import os
import numpy
import imutils
from threading import Thread
import threading
class WebcamVideoStream:
def __init__(self, src ='/dev/video0', cap = cv2.CAP_V4L2):
self.stream = cv2.VideoCapture(src,cap)
self.stream.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter.fourcc('M','J','P','G'))
self.stream.set(cv2.CAP_PROP_FPS,30.0)
self.stream.set(cv2.CAP_PROP_FRAME_WIDTH,1280)
self.stream.set(cv2.CAP_PROP_FRAME_HEIGHT,720)
(self.grabbed, self.frame) = self.stream.read()
self.stopped = False
def start(self):
Thread(target = self.update, args=()).start()
return self
def update(self):
while(True):
if self.stopped:
return
(self.grabbed, self.frame) = self.stream.read()
def read(self):
return self.frame
def stop(self):
self.stopped = True
if __name__ == "__main__":
vs = WebcamVideoStream()
vs.start()
fourcc = cv2.VideoWriter_fourcc(*'MJPG')
timeStart = False
timeStartReal = time.time()
faceRecNeeded = True
count = 0
countFrames = 0
face_cascade = cv2.CascadeClassifier('/home/pi/Downloads/haarcascade_frontalface_default.xml')
while True:
frame = vs.read()
if faceRecNeeded:
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# Detect the faces
faces = face_cascade.detectMultiScale(gray, 1.1, 4)
# Draw the rectangle around each face
for (x, y, w, h) in faces:
cv2.rectangle(frame, (x, y), (x+w, y+h), (255, 0, 0), 2)
count += 1
if count>0 and timeStart == False:
faceRecNeeded = False
timeStart = True
timeStartReal = time.time()
out = cv2.VideoWriter('output' + str(time.time()) + '.avi', fourcc, 15.0, (1280, 720))
count = 0
if timeStart == True and time.time()-timeStartReal < 5:
out.write(frame)
countFrames+=1
if timeStart == True and time.time()-timeStartReal >= 5:
timeStart = False
faceRecNeeded = True
out.release()
print(countFrames)
# Display
#cv2.imshow('img', frame)
# Stop if escape key is pressed
if cv2.waitKey(1) & 0xFF == ord('q'):
if timeStart == True:
out.release()
break
cv2.destroyAllWindows()
vs.stop()
这是我的终端在 运行ning cmd = python3 /home/pi/Desktop/DATANAME.py
之后的输出
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/numpy/__init__.py", line 140, in <module>
from . import core
File "/usr/lib/python3/dist-packages/numpy/core/__init__.py", line 101, in <module>
from . import _internal
File "/usr/lib/python3/dist-packages/numpy/core/_internal.py", line 10, in <module>
import platform
File "/usr/lib/python3.9/platform.py", line 119, in <module>
import subprocess
File "/usr/lib/python3.9/subprocess.py", line 51, in <module>
import threading
File "/home/pi/Desktop/threading.py", line 3, in <module>
from imutils.video import FPS
File "/usr/local/lib/python3.9/dist-packages/imutils/video/__init__.py", line 4, in <module>
from .videostream import VideoStream
File "/usr/local/lib/python3.9/dist-packages/imutils/video/videostream.py", line 2, in <module>
from .webcamvideostream import WebcamVideoStream
File "/usr/local/lib/python3.9/dist-packages/imutils/video/webcamvideostream.py", line 2, in <module>
from threading import Thread
ImportError: cannot import name 'Thread' from partially initialized module 'threading' (most likely due to a circular import) (/home/pi/Desktop/threading.py)
Traceback (most recent call last):
File "/home/pi/Desktop/faceDetectionThreading.py", line 2, in <module>
import cv2
ImportError: numpy.core.multiarray failed to import
你能帮我解决这个错误吗，这样我也可以 运行 通过终端
我想，您的“threading.py”文件位于桌面目录中。这很可能导致循环导入错误，因为子进程错误地导入了您自己的模块而不是 python 本机线程模块。
当您重命名 threading.py 文件以不干扰其他模块时，您的问题应该得到解决。
我在我的 Raspberry Pi 上写了一个 Python 脚本，当 运行 在 Thonny IDE 上运行时它工作得很好。但是当我想从终端启动它时，它有很多导入错误。我已经在脚本的开头添加了环境注释。这是我的以下代码：
#!/usr/bin/env python
import cv2
import time
import os
import numpy
import imutils
from threading import Thread
import threading
class WebcamVideoStream:
def __init__(self, src ='/dev/video0', cap = cv2.CAP_V4L2):
self.stream = cv2.VideoCapture(src,cap)
self.stream.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter.fourcc('M','J','P','G'))
self.stream.set(cv2.CAP_PROP_FPS,30.0)
self.stream.set(cv2.CAP_PROP_FRAME_WIDTH,1280)
self.stream.set(cv2.CAP_PROP_FRAME_HEIGHT,720)
(self.grabbed, self.frame) = self.stream.read()
self.stopped = False
def start(self):
Thread(target = self.update, args=()).start()
return self
def update(self):
while(True):
if self.stopped:
return
(self.grabbed, self.frame) = self.stream.read()
def read(self):
return self.frame
def stop(self):
self.stopped = True
if __name__ == "__main__":
vs = WebcamVideoStream()
vs.start()
fourcc = cv2.VideoWriter_fourcc(*'MJPG')
timeStart = False
timeStartReal = time.time()
faceRecNeeded = True
count = 0
countFrames = 0
face_cascade = cv2.CascadeClassifier('/home/pi/Downloads/haarcascade_frontalface_default.xml')
while True:
frame = vs.read()
if faceRecNeeded:
gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
# Detect the faces
faces = face_cascade.detectMultiScale(gray, 1.1, 4)
# Draw the rectangle around each face
for (x, y, w, h) in faces:
cv2.rectangle(frame, (x, y), (x+w, y+h), (255, 0, 0), 2)
count += 1
if count>0 and timeStart == False:
faceRecNeeded = False
timeStart = True
timeStartReal = time.time()
out = cv2.VideoWriter('output' + str(time.time()) + '.avi', fourcc, 15.0, (1280, 720))
count = 0
if timeStart == True and time.time()-timeStartReal < 5:
out.write(frame)
countFrames+=1
if timeStart == True and time.time()-timeStartReal >= 5:
timeStart = False
faceRecNeeded = True
out.release()
print(countFrames)
# Display
#cv2.imshow('img', frame)
# Stop if escape key is pressed
if cv2.waitKey(1) & 0xFF == ord('q'):
if timeStart == True:
out.release()
break
cv2.destroyAllWindows()
vs.stop()
这是我的终端在 运行ning cmd = python3 /home/pi/Desktop/DATANAME.py
之后的输出Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/numpy/__init__.py", line 140, in <module>
from . import core
File "/usr/lib/python3/dist-packages/numpy/core/__init__.py", line 101, in <module>
from . import _internal
File "/usr/lib/python3/dist-packages/numpy/core/_internal.py", line 10, in <module>
import platform
File "/usr/lib/python3.9/platform.py", line 119, in <module>
import subprocess
File "/usr/lib/python3.9/subprocess.py", line 51, in <module>
import threading
File "/home/pi/Desktop/threading.py", line 3, in <module>
from imutils.video import FPS
File "/usr/local/lib/python3.9/dist-packages/imutils/video/__init__.py", line 4, in <module>
from .videostream import VideoStream
File "/usr/local/lib/python3.9/dist-packages/imutils/video/videostream.py", line 2, in <module>
from .webcamvideostream import WebcamVideoStream
File "/usr/local/lib/python3.9/dist-packages/imutils/video/webcamvideostream.py", line 2, in <module>
from threading import Thread
ImportError: cannot import name 'Thread' from partially initialized module 'threading' (most likely due to a circular import) (/home/pi/Desktop/threading.py)
Traceback (most recent call last):
File "/home/pi/Desktop/faceDetectionThreading.py", line 2, in <module>
import cv2
ImportError: numpy.core.multiarray failed to import
你能帮我解决这个错误吗，这样我也可以 运行 通过终端
我想，您的“threading.py”文件位于桌面目录中。这很可能导致循环导入错误，因为子进程错误地导入了您自己的模块而不是 python 本机线程模块。
当您重命名 threading.py 文件以不干扰其他模块时，您的问题应该得到解决。